Home
Class 12
PHYSICS
The length of needle floating on the sur...

The length of needle floating on the surface of water is 1.5 cm.The force in addition to its weight required to lift the needle from water surface will be
(Surface tension of water = 7.5 N//cm)

A

22.5 N

B

2.25 N

C

0.25 N

D

225 N

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A needle or a pin floats on the surface of water because of

Why does a greased razor blade float on the surface of water ?

What is the surface tension of boiling water ?

If the length of a needle floating on water is 2 cm then the additional force due to surface tension required to pull the needle out of water will be. S.T of water=7.0xx10^-2N//m)

A platinum wire ring of radius 2.5 cm floats horizontally on the surface of water. A vertical force of 0.022 N is required to detach the ring from the surface of water. Then surface tension of water is.

When the temperature is increased ,surface tension of water

A ring of radius 0.75 cm is floating on the surface of water . If surface tension of water is 0.07N//m , then the force required to lift the ring from the surface of water will be

The maximum force in addition to the weight required to pull a wire frame 5.0 cm long from a water surface at a temperature of 20^@ C is 720dyne . The surface tension of water is

Eight droplets of water, each of radius 0.2 mm, coalesce into a single drop . Find the change in total surface energy. (Surface tension of water = 0.072 N/m)

If the maximum force in addition to the weight, required to pull a wire frame 5.0 cm long from a water surface at a temperature of 20^@C is 720 dyne, the surface tension of water will be